Class: HSMR::Key

Inherits:
Object
  • Object
show all
Includes:
HSMR
Defined in:
lib/hsmr/key.rb

Constant Summary

Constants included from HSMR

DOUBLE, SINGLE, TRIPLE, VERSION

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from HSMR

cvv, decimalise, decrypt_pin, encrypt, encrypt_pin, #generate, ibm3624, #kcv, numeric?, #odd_parity?, #parity, pvv, #set_odd_parity, to_binary, to_hex, #to_s, #xor, xor, #xor!

Constructor Details

#initialize(init = nil, length = DOUBLE) ⇒ Key

Returns a new instance of Key.



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# File 'lib/hsmr/key.rb', line 8

def initialize(init=nil, length=DOUBLE)
  return nil if (init.is_a? Array ) && (init.length == 0) 
  
  init = init.first if (init.is_a? Array) && (init.length == 1)
  
  if init.is_a? Array
    init.collect! {|c| ( (c.is_a? HSMR::Component) ? c : HSMR::Component.new(c) ) }

    raise TypeError, "Component argument expected" unless init.first.is_a? Component
  
    @key=HSMR::xor(init.pop, init).key

  elsif init.is_a? Component
    @key = init.component
  elsif init.is_a? String
    key=init.gsub(/ /,'')
    @key = key.unpack('a2'*(key.length/2)).map{|x| x.hex}.pack('c'*(key.length/2))
  elsif key.nil?
    key = generate(length)
    @key = key.unpack('a2'*(key.length/2)).map{|x| x.hex}.pack('c'*(key.length/2))
  end
  @length = @key.length
end

Instance Attribute Details

#key ⇒ Object (readonly)

Returns the value of attribute key.



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# File 'lib/hsmr/key.rb', line 5

def key
  @key
end

#length ⇒ Object (readonly)

Returns the value of attribute length.



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# File 'lib/hsmr/key.rb', line 6

def length
  @length
end